Plow attachment



Patnted Apr. 14, 1896.

m N E w M A PM A W O L P M d 0 M O W Wit scs UNITED STATES jATENTOFFICE.

BOICE PARK, on ROANOKE, ALABAMA.

PLOW ATTACH M ENT.

SPECIFICATION forming part of Letters Patent No. 558,098, dated April14, 1896.

Application filed August 28, 1895. $er1'a1 No. 560,736. (No model.)

To all whom it may concern.-

Be it known that I, BOIOE PARK, a citizen of the United States, residingat Roanoke, in the county of Randolph and State of Alabama, haveinvented a new and useful Plow Attachment, of which the following is aspecification.

This invention relates to an improvement in plows, and has specialreference to the means for securing the plow point or shovel to thefoot-piece or standard thereof.

The object of the present invention is to provide a simple andefficienteXtension-piece to be used in connection with detachableplow-points, the said piece being in the 11ature of a clamp,which is adjustably connected with the plow-standard, soas to becapable oflongitudinal adjustment thereof, and which, with the aid of aclamping-bolt, is adapted to confine between it and the foot of thestandard a plow point or shovel of any desired shape or description.

To this end the invention consists in certain novel features and detailsof construction and arrangement of parts, as hereinafter fully describedillustrated in the drawings, and finally pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective view showing asmall portion of a plow-beam, one of the standards thereof, and a plowpoint or shovel secured to said standard by means of the improvedextension-clamp. Fig. 2 is an enlarged vertical section through thelower end of the stand,- ard and also through the plow-point,extension-clamp, &c. Fig. 3 is a rear perspective view of theextension-clamp. Fig. 4 is a detail perspective of the spacing-plate.

Similar numerals of reference designate corresponding parts in theseveral figures of the drawings.

Referring to the accompanying drawings, 1 designates the standard orfoot-piece of an ordinary plow, which, for the purpose of carrying outthis invention, is provided at its lower end with alongitudinally-extending and vertically-disposed slot 2.

3 indicates a plow point or shovel, of any ordinary or preferredconstruction, which it is desired to attach to the standard 1.

4 represents the extension-clamp, which is secured to the front face ofthe standard 1 1by meansof a clamping-bolt 5, which passes through anopening in the part 4 and also extends through the slot 2 of thestandard, 55

'held at the desired distance from the standard 1 or in parallelismtherewith by means of a spacing-plate 6, which is introduced between theclamp 4 and the standard and provided with a dovetailed notch 7centrally of its upper edge, which engages with a correspondingly-shapedrearwardly projecting stud 8, formed integrally with or secured to theclamp 4 and extending rearwardly a sufficient distance to enter the slot2 in the standard. By means of this construction the spacin g-plate 6 ispositively prevented from escape or accidental displacement while theparts are clamped together, and the rearwardlyprojecting stud or tongue8 serves to lock the upper end of the extension-clamp and the entiredevice and effectually prevents the plow-point from canting to one sideor the other.

9 designates an oppositely-disposed pair of stops or shoulders, whichare in the nature of integral lugs or projections from the rear face ofthe extension-clamp. These stops serve to limit the upward movement ofthe plow or 0 shovel with relation to the clamp 4 and also prevent saidplow point orshovel from turning relatively to said clamp.

From the foregoing description it will be apparent that by loosening thenut on the bolt 5 the plow-point 4 may be removed and another point orshovel inserted in its place, after which said plow-point, together withthe entension-clamp 4, may be moved longitudinally of the standard 1 forthe purpose of bringing the point of the plow to the desired elevationfor enabling thesame to penetrate the soil to any desired depth. Byremoving the extension-clamp 4 entirely the spacing plate 6 maybe slidfrom off the dovetailed tongue or stud 8 and replaced by one of greateror less thickness corresponding to the thick ness of the upper end ofthe plow point or shovel for enabling the clamp to confine the shovelbetween it and the standard with the desired pressure. The means foradjusting the elevation of the plow-point and providing for theattaching and detaching of the same will thus be seen to be very simple,and the clamp 4 will serve to extend the operative surface of the plowpoint or shovel a considerable distance vertically.

Changes in the form, proportion, and minor details of construction maybe resorted to without departing from the spirit or sacrificing any ofthe advantages of this invention.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is-

1. The combination with a plow-standard provided at its lower end with alongitudinal slot, of aplow point or shovel clamped against the frontface of said standard, an extensionclamp secured to said standard infront of the plow point or shovel and adjustable up and down on thestandard, a bolt passing through said clamp and adjustablelongitudinally within the slot in said standard, said extension clamphaving its lower end arranged in front of and overlapping the upper endof the plow point or shovel in such manner as to confine said shovelbetween it and ssspos the standard, and the oppositelydisposed stopprojections on the rear face of said extension-clamp engaging with theplow point or shovel, substantially as and for the purpose specified.

2. The combination with a plow-standard having its lower end slottedlongitudinally, of an extension-clamp secured to the front of saidstandard and adjustable up and down thereon, a bolt passing through saidclamp and the slot in said standard, a plow point or shovel confinedbetween said clamp and the front face of the standard, arearwardly-projecting tongue or stud located centrally of the upper endof the extension-clamp and entering the slot in the standard and havinga dovetailed cross-sectional shape, and a spacing-plate located in theplane of the plow point or shovel and disposed between saidextension-clamp and plow-standard and having a dovetailed notchcorresponding in shape to and adapted to take over said tongue or stud011 the extension-clamp, whereby the clamp and spacing-plate are held inthe proper relative positions, substantially as and for the purposedescribed.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

BOICE PARK.

Witnesses:

J. S. PRESCOTT, ROBERT WILLOUGHBY.

